Charge electronic devices remotely with ultrasonic waves
Institute of Science and Technology South Korea (KIST) has developed a new ultrasonic wireless charging technique that can power many medical implantable devices such as pacemakers or drug delivery systems.
In this technology, the scientists used ultrasonic waves instead of electromagnetic waves, creating a generator of ultrasonic waves and a device that converts these waves into electricity. The charging process works through water, air, and even through human tissue.
Through underwater testing, the team was able to transfer 8 megawatts of power per hour to a device located 6cm away from the power source. The device efficiency reaches 4%, enough to light about 200 LEDs or power the sensor to transmit data via bluetooth.
It is known that the charger does not generate too much heat and can be safely used inside the human body. Another advantage of this method is that ultrasound has been used in various medical situations for more than a century, and is very safe for humans and the environment. In addition to medical implants, the technique could also have applications in deep-sea sensors and many other purposes.
at Blogtuan.info – Source: vtc.vn – Read the original article here